Lecture Quiz 1

A  lysosomes

B  mitochondria

C  microfilaments

D  ribosomes

E  peroxisomes

A  enzymes and transport of materials into or out of the cell

B  cell recognition

C  attachment sites for ligands, cell recognition, enzymes and transport of materials into or out of the cell

D  attachment sites for ligands

A  mitochondria

B  Golgi apparatus

C  lysosomes

D  endoplasmic reticulum

E  ribosomes

A  enzyme activity is proportional to the substrate concentration up until the saturation point

B  enzyme activity is proportional to the temperature, up until 40° C

C  they work by increasing the activation energy

D  most enzymes work best between a pH of 7.3 and 7.4

E  the shape of the active site must match the shape of the substrate

A  TRUE

B  FALSE

A  linear proteins are the most common

B  composed of repeating units of nucleic acids

C  their functions include enzymes, buffers, and production of movement

D  consists of the elements C, H, O, N and phosphorus

E  primary structure refers to how a chain folds on itself

A  FALSE

B  TRUE

A  TRUE

B  FALSE

A  conditions include pH, temperature, and the concentrations of nutrients, electrolytes and gases

B  maintains stable conditions within the internal environment

C  the internal environment refers to the fluids inside the cells

D  conditions are kept within narrow ranges

E  the endocrine and nervous systems regulate homeostasis

A  they are the basic units of structure and function, a typical adult has trillions of cells, all cells are anatomically and physiologically similar and many cells are specialized for a particular function

B  they are the basic units of structure and function

C  a typical adult has trillions of cells

D  all cells are anatomically and physiologically similar and many cells are specialized for a particular function

A  TRUE

B  FALSE